| import { useEffect, useRef } from 'react'; | |
| const useInterval = (callback: Function, delay?: number | null) => { | |
| const savedCallback = useRef<Function>(() => {}); | |
| useEffect(() => { | |
| savedCallback.current = callback; | |
| }); | |
| useEffect(() => { | |
| if (delay !== null) { | |
| const interval = setInterval(() => savedCallback.current(), delay || 0); | |
| return () => clearInterval(interval); | |
| } | |
| return undefined; | |
| }, [delay]); | |
| }; | |
| export default useInterval; | |